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Do you think extrusive or intrusive igneous rocks are likely to have larger crystals?
If a rock has large crystals, it is an intrusive rock. Intrusive rocks form underneath the Earth's surface. Magma cools slowly so it has time to form large crystals. An example is granite, where you can see the crystals with your naked eye. Rocks that have small crystals are extrusive rocks. Extrusive rocks are ones that form from lava (blasted out of a volcano) so they cool very quickly, not allowing large crystals to form. An example is obsidian, where you cannot visibly see the small crystals; it just looks like one black, glassy rock.
Do igneous rocks have small crystals large crystals or no crystals?
Igneous rocks can have both small and large crystals, depending on how quickly they cool. If an igneous rock cools slowly beneath the Earth's surface, it can form large crystals, while rapid cooling at the Earth's surface or in an eruption can result in small or no visible crystals.
Is obsidian intrusive or extrusive rock?
Obsidian is intrusive because it was cooled below the ground.
What is the difference between a intrusive igneous rock ad an extrusive rock?
instrusive is inside the valcano and exstrusive comes onto earth's crust
Explain 2 ways Igneous Rocks Form?
Igneous rocks form when magma cools and solidifies either underground (intrusive rocks) or on the Earth's surface (extrusive rocks). Intrusive rocks cool slowly, allowing large crystals to form, while extrusive rocks cool quickly, resulting in tiny crystals or glassy textures.
Do you think extrusive or intrusive igneous rocks are likely to have larger crystals?
If a rock has large crystals, it is an intrusive rock. Intrusive rocks form underneath the Earth's surface. Magma cools slowly so it has time to form large crystals. An example is granite, where you can see the crystals with your naked eye. Rocks that have small crystals are extrusive rocks. Extrusive rocks are ones that form from lava (blasted out of a volcano) so they cool very quickly, not allowing large crystals to form. An example is obsidian, where you cannot visibly see the small crystals; it just looks like one black, glassy rock.
Which one has large grains between intrusive and extrusive igneous rocks?
intrusive
When a igneous rock with large cystals cools what is it?
An intrusive igneous rock has larger crystals than an extrusive igneous rock because it has had a longer period of time to solidify underground.
Is micro granite intrusive or extrusive?
Granite is an intrusive type of igneous rock Also since it is intrusive it cools very slowly and forms large crystals and coarse (large) grained igneous rock.
What is the name of igneous rocks that have large crystals and small crystals?
Large Crystals = Intrusive Small Crystals = Extrusive The name relates to where the minerals were cooled (at at what rate). In the case of intrusive igneous, the rocks were formed above Earth's surface and were thus cooled quickly and the minerals had little time to become defined. Extrusive rocks, therefore, were formed within the Earth's mantle and had a much longer time before being gathered to cool (as they slowly rose to the top).
Do igneous rocks have small crystals large crystals or no crystals?
Igneous rocks can have both small and large crystals, depending on how quickly they cool. If an igneous rock cools slowly beneath the Earth's surface, it can form large crystals, while rapid cooling at the Earth's surface or in an eruption can result in small or no visible crystals.
Does extrusive or intrusive igneous rock form when lava cools quickly?
Extrusive igneous rock forms when lava cools quickly on the Earth's surface. This rapid cooling prevents large crystals from forming, resulting in a finer-grained texture. In contrast, intrusive igneous rock forms when magma cools slowly beneath the surface, allowing for the development of larger crystals.
What is an extrusive igneous rock with large crystals?
granite
How is the formation of intrusive igneous rock different from that of extrusive igneous rock?
Intrusive igneous rocks is formed from magma that cools, solidifies, crystallizes, and hardens slowly within the earth's crust, and this makes its crystals large. In the case of the extrusive igneous rocks, they develop from the rapid cooling, solidification, crystallization and hardening of lava on the earth's surface and this makes them more smooth and having minerals with crystals of smaller size.
Is Rhyolite Porphyry an intrusive or extrusive rock?
Rhyolite Porphyry is an intrusive rock, formed from the slow cooling of magma underground. It is characterized by large crystals (phenocrysts) surrounded by a fine-grained matrix.
Is obsidian intrusive or extrusive rock?
Obsidian is intrusive because it was cooled below the ground.
Do extrusive igneous rocks have small grains since intrusive has large?
That is correct.
